KR20100073352A - Method for controlling transmitting data of terminal and apparatus thereof - Google Patents

Abstract

PURPOSE: A data transmission controlling method of a terminal is provided to increase a data transmission success rate by repeatedly performing transmitting for fixed times. CONSTITUTION: A first switching system assigns an IP(Internet Protocol) to a first terminal(S311). The first terminal stores the IP(S321). The first terminal produces MMS(Multimedia Message Service) message by an input signal. A packet control server stores the IP information of the first terminal(S319). The second terminal stores an allocated IP(S322). The first terminal produces an HTTP(HyperText Transfer Protocol) message(S350). If the transmission of the HTTP message is failed, the first terminal performs retransmission(S370,S380).

Description

METHOD FOR CONTROLLING TRANSMITTING DATA OF TERMINAL AND APPARATUS THEREOF}

The present invention relates to data transmission control, and more particularly, to a data transmission control method and apparatus for a terminal which can improve the transmission success rate when data is directly transmitted and received between terminals using IP assigned to the terminal. will be.

1 is a view for explaining a method of transmitting and receiving a multimedia message (hereinafter referred to as "MMS message") between terminals of the prior art. In more detail, it is a diagram for describing a method of transmitting an MMS message from a calling terminal (eg, the first terminal 150) to a receiving terminal (eg, the second terminal 160).

Referring to FIG. 1, the first and second terminals 150 and 160 may be connected to a mobile communication network.

The mobile communication network includes MSC 100 (Mobile Switching Center), SMSC 110 (Short Message Center), MMSC 120 (Multimedia Message Service Center), base station 130, 140 (BTS: Base Transceiver Station or Node-B) It includes. In addition, it is obvious that the mobile communication network further includes a base station controller, an authentication center, a home location register, a visitor location register, etc., but it is not shown in FIG. 1 to clarify the gist of the present invention.

MSC (100) is a wired / wireless digital exchange that provides a wired communication function, a wireless communication function, and a mobile communication function as a network component that performs a pivotal function in a mobile communication network. Location registration procedure, handoff procedure processing and interworking function with other network.

The base stations 130 and 140 are mobile communication network terminators that are directly connected to the mobile communication terminal by performing baseband signal processing, wired / wireless conversion, and transmission and reception of wireless signals.

The SMSC 110 is a short message center and works with the MSC 100 to transmit various types of short text of about 40 characters in Korean.

The MMSC 120 performs a caching function of receiving and storing a message from the transmitting mobile communication terminal 150 and allowing the receiving mobile communication terminal 160 to access the MMSC 120 to receive the message. Pre-Paid, Reply Charging, Message Blocking, Voice Mail Sever (VMS), Short Message Service Center (SMSC), and Unified Messaging through interworking with external email servers .

The first terminal 150 and the second terminal 160 mean a mobile communication terminal that can transmit and receive voice data or packet data by setting up a call or data call through the above-described mobile communication network.

In addition, for convenience of description, the first and second terminals 150 and 160 will often be connected through different mobile communication networks, but the first and second terminals 150 and 160 will be identical to the same MSC 100. It is assumed that the first terminal 150 transmits a multimedia message (for example, message A) from the first terminal 150 to the second terminal 160.

In the conventional multimedia message transmission method, the first terminal 150 transmits a multimedia message (for example, message A) to the MSC 100, and the multimedia message transmitted to the MSC 100 is temporarily sent to the MMSC 120. Stored. Subsequently, the MSC 100 transmits a multimedia message reception request signal to the second terminal 160. The second terminal 160 may receive the multimedia message from the MMSC 120 via the MSC 100 in response to the reception request signal.

According to the prior art, there is a problem that only a series of message processing devices (for example, MMSC 120) can be used to send and receive multimedia messages. More specifically, when data is transmitted from the first terminal 150 to the second terminal 160, the second terminal is temporarily stored in a series of message processing devices (for example, MMSC 120) and is a receiving terminal. There is a problem that the terminal 160 should receive from the server.

In addition, in the prior art, since the terminal has not been assigned an IP according to the terminal until the data call is connected, a phone to phone or a terminal-to-terminal which is a recent technology for transmitting and receiving data without a separate message processing device. There is a problem in that data transmission technology cannot be applied.

An object according to an embodiment of the present invention, which was created to solve the above problems, is a data of a terminal that can improve a transmission success rate for data directly transmitted from a calling terminal to a receiving terminal using an IP assigned to the terminal. A transmission control method and apparatus are provided.

Another object of the present invention is to provide a method and apparatus for controlling data transmission of a terminal that can provide a user convenience by improving communication quality by improving a transmission success rate for direct data transmission between terminals. .

Another object of the present invention is to provide a method and apparatus for controlling data transmission of a terminal, which does not need to include a database for temporarily storing data by directly transmitting and receiving data between terminals.

In order to achieve the above object, a data transmission control method of a terminal according to an aspect of the present invention comprises the steps of: requesting each of an IP (Internet Protocol) assignment to a mobile communication network; Storing IP information allocated and received from the mobile communication network; Generating a multimedia message according to a signal input by a user; Requesting and receiving IP information of a receiving terminal from the mobile communication network; Generating a hypertext transfer protocol (HTTP) message using at least one of the stored IP information, IP information of the receiving terminal, and the multimedia message; Transmitting the HTTP message to the receiving terminal and determining whether the transmission is successful; And resending the HTTP message to the receiving terminal when the HTTP message fails to be transmitted.

Further, the retransmitting may include counting the number of failed transmissions of the HTTP message, determining whether the calculated number of failed transmissions exceeds a preset reference number, and when the number of transmission failures is less than or equal to the reference number, the receiving terminal receives the HTTP message. Can be resent.

An apparatus for controlling data transmission of a terminal according to an aspect of the present invention includes a data packet generator for generating a data packet according to an input signal of a user; And requesting a mobile communication network to allocate an IP (Internet Protocol) of a terminal, storing received IP information, requesting and receiving IP information of a receiving terminal from the mobile communication network, and receiving the stored IP information and IP information of the receiving terminal. And a control unit for transmitting the data packet by using the control unit. The control unit may determine whether the data packet is successfully transmitted to the receiving terminal and retransmit the data packet to the receiving terminal when the transmission fails.

According to another aspect of the present invention, an apparatus for controlling data transmission of a terminal requests PDP activation from a mobile communication network, stores PDP information according to a received PDP approval request, and requests and receives PDP information of a receiving terminal from the mobile communication network. A control unit; A multimedia message generating unit generating a multimedia message according to an input signal; And an HTTP message unit configured to generate an HTTP message using at least one of the multimedia message, the stored PDP information, and the PDP information of the receiving terminal, wherein the control unit transmits the HTTP message to the receiving terminal. If it is determined that transmission fails, the HTTP message may be retransmitted to the receiving terminal.

The data transmission control system of a terminal according to an aspect of the present invention receives an IP allocation request from a terminal, allocates an IP corresponding to the terminal, transmits the allocated IP information to the terminal, and requests IP information of the first terminal. A mobile communication network that receives the information and transmits the information about the IP information of the first terminal to the corresponding terminal that has requested the information; And receiving and storing IP information allocated by the mobile communication network, generating a data packet according to an input signal of a user, requesting and receiving IP information of a second terminal from the mobile communication network, and storing the stored IP information and the first information. 2 transmitting the data packet to the second terminal using IP information of the terminal, and determining whether the data packet is successfully transmitted to the second terminal and retransmitting the data packet to the second terminal if the transmission fails. It may include a terminal.

Other objects and features of the present invention in addition to the above objects will be apparent from the description of the embodiments with reference to the accompanying drawings. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention, and the singular forms “a”, “an” and “the” include plural forms unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Hereinafter, a method and apparatus for controlling data transmission of a terminal according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6. In order to facilitate a thorough understanding of the present invention, the same reference numerals are used for the same means regardless of the number of the drawings.

2 illustrates a configuration of a terminal according to an embodiment of the present invention, which includes a data transmission control apparatus of a terminal according to an embodiment of the present invention.

Prior to the detailed description of the drawings, it is intended to clarify that the division of the components in the present specification is only divided by the main function of each component. That is, two or more components to be described below may be combined into one component, or one component may be provided divided into two or more for each function. Each of the components to be described below may additionally perform some or all of the functions of other components in addition to the main functions of the components, and some of the main functions of each of the components are different. Of course, it may be carried out exclusively by. Therefore, the existence of each component described through this specification should be interpreted functionally, and for this reason, the configuration of the components according to the terminal for transmitting and receiving data in the present invention is the limit to achieve the object of the present invention It is clearly noted that this may be different from FIG. 2.

Referring to FIG. 2, the terminal 200 includes an input unit 201, a display unit 202, an audio output unit 203, a transceiver 204, a MMS (Multiedia MesSage) generator 205, and HTTP (HyperText Transfer). Protocol) message unit 206 and the control unit 207 may be included.

The input unit 201 may receive a signal for controlling the terminal 200 through a key, a button, or the like, or receive a voice through a microphone.

The display unit 202 is a component that displays a predetermined process or result performed by the terminal 200 to the user, and may be configured by an LCD or the like.

The sound output unit 203 may output a predetermined process performed by the terminal 200 to the user as a sound, or output a voice transmitted from the calling terminal to the user when a call is communicated between the terminals.

The transceiver 204 is a component that transmits and receives data and voice between terminals, and may include a wireless transceiver, a modulator, a demodulator, a modem, and the like.

Here, since the input unit 201, the display unit 202, the sound output unit 203, and the transceiver unit 204 are known technologies at the time of filing the present invention, detailed descriptions thereof will be omitted to clarify the gist of the present invention. .

The MMS generator 205 may generate a multimedia message (MMS) according to a signal input from the input unit 201.

The HTTP message unit 206 may generate an HTTP message using at least one of a multimedia message generated by the MMS generator 205, an IP (Internet Protocol) of the calling terminal, and an IP of the receiving terminal.

In addition, the HTTP message unit 206 may generate an HTTP message using at least one of a multimedia message generated by the MMS generator 205, PDP information of a calling terminal, and PDP information of a receiving terminal.

The control unit 207 may request the mobile communication network to allocate the IP of the terminal, receive and store the received IP from the mobile communication network, and request and receive the IP information of the receiving terminal from the mobile communication network.

In addition, the controller 207 may request PDP activation from the mobile communication network, receive a PDP approval request from the mobile communication network, store PDP information, and request and receive PDP information of a receiving terminal from the mobile communication network.

In this case, the control unit 207 is not able to receive the data transmitted when transmitting data to the receiving terminal according to the situation of the receiving terminal, for example, the power of the receiving terminal is turned off, the receiving terminal is located in a shaded area or the data If data reception is impossible due to call instability, data can be retransmitted to the receiving terminal.

In this case, the control unit 207 may repeat data transmission a predetermined number of times when the receiving terminal does not receive the data transmitted through the transmitting and receiving unit 204, and the receiving terminal fails to receive the data for the preset number of times. In this case, the transmission data may be stored in a predetermined space, for example, a storage space such as a temporary storage box. The predetermined number of times may be determined by a company, but may be set by a user without being limited thereto.

Of course, the retransmission of data may be automatically performed by the terminal 200, but may be performed by the user's selection. That is, if data transmission to the receiving terminal fails, the control unit 207 outputs the content to the display unit 202 to inquire whether the data is to be retransmitted from the user, and the data to the receiving terminal only when retransmission is selected by the user. If the user does not want to retransmit the transmission data may be stored in a predetermined space, for example, a temporary storage box.

Of course, although an embodiment of the present invention has been described as being limited to a multimedia message, the present invention is not limited thereto and may include a data packet including all multimedia messages and contents. That is, the controller 207 may transmit the data packet generated by the data packet generator (not shown) to the receiving terminal using the stored IP information and the IP information of the receiving terminal.

As such, the apparatus for controlling data transmission of a terminal according to an embodiment of the present invention directly transmits data between terminals using an IP assigned to the terminal, and when data transmission to the receiving terminal fails, at least a predetermined schedule of data. By repeatedly transmitting the number of times, it is possible to improve the data transmission success rate at the calling terminal, thereby improving the communication quality.

In addition, since data is directly transmitted and received between terminals using IP assigned to the terminal, there is no need to provide a separate database for temporarily storing data.

3 is a flowchart illustrating a data transmission control method of a terminal according to an embodiment of the present invention.

Hereinafter, a mobile communication network includes a base station, a base station controller, and a switch, a calling terminal is a first terminal, and a receiving terminal is assumed to be a second terminal.

Hereinafter, a description will be given on the assumption that a mobile communication network is a wideband code division multiple access (WCDMA) network and an MMS message is transmitted between terminals. However, the present invention is not limited thereto, and the present invention is not limited to the present invention for transmitting various data such as contents. It can be applied to those skilled in the art in light of the technical spirit of the present invention.

Referring to FIG. 3, the first terminal and the second terminal request an IP allocation from the exchange connected to each terminal, that is, the first exchange and the second exchange (S310 and S315), and control each of the terminals through respective control of the corresponding exchange. IP is assigned to the corresponding (S311, S316).

In this case, the first terminal may store the IP allocated from the first exchanger in the control unit constituting the first terminal, and the second terminal may also store the IP allocated from the second exchanger in the control unit constituting the first terminal ( S321, S322).

Here, when the mobile communication network is a WCDMA network, the exchange may be a Gateway GPRS Support Node (GGSN), a Serving GPRS Support Node (SGSN).

Although the switch has been described as requesting and assigning an IP corresponding to the terminal, the present invention is not limited thereto, and other components of the mobile communication network can allocate the corresponding IP to the terminal in view of the technical idea of the present invention. It is obvious to those skilled in the art.

Each switch, that is, the first switch and the second switch, allocates IP to the first terminal and the second terminal and transmits the information to the packet control server, so that the packet control server can store the IP information of the received terminal. (S312, S317, S319).

Here, the packet control server may be implemented as a domain name server, and may include information about each terminal connected to the mobile communication network. IP information and corresponding terminal information allocated to each terminal by each exchange are It may be matched and stored together. Of course, it is apparent to those skilled in the art in view of the technical idea of the present invention that it can be configured using a terminal IP storage server including IP information allocated to the terminal separately from the general DNS.

Subsequently, the first terminal generates an MMS message according to a signal input from the user, and when a transmission request is input from the user, the first terminal requests and receives IP information of the receiving terminal, that is, the second terminal, from the packet control server through the first exchanger. (S330, S341, S342).

For example, the first terminal may receive the IP information of the second terminal from the packet control server by transmitting the receiving terminal telephone number input by the user to the packet control server through the first switch.

The first terminal generates an HTTP message using at least one of IP information of the first terminal, IP information of the second terminal, and MMS message, and transmits the HTTP message generated using the IP information of the second terminal through the mobile communication network. Transmission to the second terminal (S350, S360).

The first terminal determines whether the HTTP message is successfully transmitted to the second terminal, and if the transmission fails, retransmits the HTTP message to be transmitted to the second terminal (S370 and S380).

Of course, in step S370, if the HTTP message is successfully transmitted to the second terminal, the process ends.

In this case, the first terminal may determine whether the transmission is successful through the reception of a response signal for receiving the HTTP message transmitted from the second terminal.

FIG. 4 is a flowchart illustrating an operation of step S380 shown in FIG. 3 according to an embodiment of the present disclosure.

Referring to FIG. 4, in step S380, when the HTTP message is not transmitted to the second terminal in step S370, information on a failure to transmit the HTTP message is displayed on the screen, and the user is asked whether the message is to be resent (S410, S420).

For example, by displaying the information "Message transmission failed. Do you want to resend?" On the screen provided in the first terminal, the user can be queried whether or not to resend the message.

When retransmission is selected by the user, the HTTP message is retransmitted to the second terminal, and the transmission success is determined again (S430 and S440).

Steps S430 and S440 are performed up to a predetermined number of times, for example, N times. If the HTTP message is successfully transmitted to the second terminal during N times, the processes are terminated (S450).

As a result of the determination in step S450, when the number of transmission failures exceeds N times, a result thereof, that is, information on the failure of transmission of the HTTP message to the second terminal is displayed on the screen to inform the first terminal user that the transmission has failed, and the HTTP message Store the temporary storage (S460, S470).

As can be seen in Figure 4, in the data transmission control method in a system for directly transmitting and receiving data between terminals according to an embodiment of the present invention, the receiving terminal may receive data when transmitting data such as content, MMS, etc. to the receiving terminal. If there is no situation, for example, power off, location in the shaded area, poor communication status, etc., the transmission process is repeated at least a certain number of times, thereby improving the success rate of data transmission to the receiving terminal. The user can check whether data transmission is successful and provide convenience to the user by eliminating the need to retransmit if the transmission fails.

Furthermore, communication quality may be improved by improving transmission success rate.

Hereinafter, the preservation mode or the dormant mode together with the WCDMA radio protocol will be briefly described with reference to FIG. 5, and the data transmission control method according to another embodiment of the present invention will be described with reference to FIG. 6. Explain.

5 is a diagram for explaining a WCDMA radio protocol.

Referring to FIG. 5, the WCDMA radio protocol includes a physical layer 510, a medium access control (MAC) layer 520, a radio link control (RLC) layer 530, and a radio resource control (RRC) layer 540. , A mobility management (MM) layer 550, a general packet radio service (GPRS) mobility management (GMM) layer 552, a call control (CC) layer 560, and a session management (SM) layer 562. .

The functions of the physical layer 510 include RF signal processing, spreading, modulation, coding, decoding, power control, and soft handoff processing. In the upper layer, information is transmitted to the physical layer 510 through the MAC layer 520, and the RLC layer 530 performs RLC connection establishment and RLC connection release.

All control signaling from or to the user is carried through the RRC layer 540. The RRC layer 540 determines which radio resource should be assigned to the user and is responsible for radio resource management. More specifically, the RRC layer 540 determines the initial RRC connection time used for initial signaling transmission between the mobile communication terminal and the mobile communication network for cell allocation and management, and performs cell reselection. It also performs a Measurement Report, which determines when and how it will be reported.

The MM layer 550 and the CC layer 560 provide mobility management, call setup and call release of a mobile communication terminal to provide a function for allowing a user to make a mobile phone call. It is in charge of call control service.

The GMM layer 552 and the SM layer 562 perform packet management such as packet switched (PS) related mobility and session management services such as activating, deactivating, and modifying a PDP context.

When the RRC layer of a predetermined mobile communication terminal and the RRC layer of a radio access network (Random Access Network or UMTS Terrestrial RAN) are connected to exchange RRC messages with each other, the mobile communication terminal is in an RRC connection state. If not, the mobile communication terminal is in an idle mode or in a dormant mode.

Here, according to another embodiment of the present invention, a preservation mode may be considered for efficient operation of radio network resources.

The conservation mode is to turn off the radio (RF) stage and activate only the PDP context when there is no transmission in the packet session for a predetermined time for efficient operation of radio network resources.

In this case, when the mobile communication terminal receives a key for accessing a data call from the user or receives a paging from the mobile communication network, the terminal may resume RRC connection and transmit and receive normal data.

6 is a flowchart illustrating a data transmission control method according to another embodiment of the present invention.

Here, a description overlapping with the part described with reference to FIG. 3 will be omitted for clarity of the gist of FIG. 6, and the environment assumed in the description of FIG. 3 will be described while keeping the same in FIG. 6.

Referring to FIG. 6, the first terminal requests the first exchange to activate the PDP context, receives the activated PDP context from the first exchange, and stores the received PDP information (S611, S612, and S613).

Subsequently, when there is no data transmission / reception for a predetermined time, the first terminal may enter a preservation mode (S614). More specifically, the radio terminal (RF) of the first terminal and the first exchange can be released, and the first exchange can activate and store only the PDP context for the first terminal. Therefore, in this case, there is an advantage that the radio resources can be efficiently used.

Here, the PDP context may include information (for example, QoS) about environment setting between the terminal and the mobile communication network, in addition to the IP information of the terminal.

The process in which the second terminal requests and activates the PDP context from the second exchange, stores the received PDP context information, and enters a retention mode (S615 to S618) may be performed in the same manner as in steps S611 to S614. It is apparent to those skilled in the art in view of the technical idea of the present invention.

In addition, it will be apparent to those skilled in the art that the PDP context information according to each terminal may be stored in the packet control server.

The first terminal may generate an MMS according to a signal input from the user, request an RRC connection to the first exchange, and receive an acknowledgment signal (ACK) from the first exchange (S620, SS630, S631).

Subsequently, the first terminal may request PDP context information of the second terminal from the packet control server to receive PDP context information of the second terminal (S632 and S633).

The first terminal generates an HTTP message using PDP context information of the first terminal, PDP context information of the second terminal, and MMS, and directly transmits the generated HTTP message to the second terminal (S640, S650).

In this case, the first terminal may generate an HTTP message through the HTTP message unit provided in the terminal.

After transmitting the HTTP message to the second terminal, the first terminal determines whether the HTTP message is successfully transmitted to the second terminal, and if the transmission fails, retransmits the HTTP message to be transmitted to the second terminal (S660 and S670).

Here, the process of retransmitting the HTTP message in the first terminal (S670) may operate in the same manner as step S380 shown in FIG. That is, step S670 may operate according to the operation flow shown in FIG. 4.

As described above, the present invention has an advantage in that a terminal which does not transmit or receive data for a predetermined time may enter a preservation mode or a dormant mode and efficiently use a wireless network.

The method and apparatus for controlling data transmission of a terminal according to the present invention can be modified and applied in various forms within the scope of the technical idea of the present invention and are not limited to the above embodiments. In addition, the embodiments and drawings are merely for the purpose of describing the contents of the invention in detail, not intended to limit the scope of the technical idea of the invention, the present invention described above is common knowledge in the technical field to which the present invention belongs As those skilled in the art can have various substitutions, modifications, and changes without departing from the spirit of the present invention, it is not limited to the embodiments and the accompanying drawings. And should be judged to include equality.

1 is a view for explaining a multimedia message transmission and reception method between terminals in the prior art.

2 shows the configuration of a terminal according to an embodiment of the present invention.

3 is a flowchart illustrating a data transmission control method of a terminal according to an embodiment of the present invention.

FIG. 4 is a flowchart illustrating an operation of step S380 shown in FIG. 3 according to an embodiment of the present disclosure.

5 is a diagram for explaining a WCDMA radio protocol.

6 is a flowchart illustrating a data transmission control method according to another embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

201: input unit

202: display unit

203: sound output unit

204: transceiver

205: MMS generator

206: HTTP message part

207: control unit

Claims (7)

Requesting each of the IP assignments to the mobile communication network; Storing IP information allocated and received from the mobile communication network; Generating a multimedia message according to a signal input by a user; Requesting and receiving IP information of a receiving terminal from the mobile communication network; Generating a hypertext transfer protocol (HTTP) message using at least one of the stored IP information, IP information of the receiving terminal, and the multimedia message; Transmitting the HTTP message to the receiving terminal and determining whether the transmission is successful; And Retransmitting the HTTP message to the receiving terminal when the HTTP message fails to be transmitted; Data transmission control method of the terminal comprising a. The method of claim 1, Retransmitting is And transmitting information on the transmission failure when the HTTP message fails, and retransmitting the HTTP message to the receiving terminal when retransmission is selected by a user. The method according to any one of claims 1 and 2, Retransmitting is Counting the number of transmission failures of the HTTP message, determining whether the calculated number of transmission failures exceeds a predetermined reference number, and when the transmission failure number is less than or equal to the reference number, transmitting data of the terminal retransmitting the HTTP message to the receiving terminal; Control method. A data packet generator for generating a data packet according to an input signal of a user; And Requesting a mobile communication network to allocate an IP (Internet Protocol) of a terminal, storing received IP information, requesting and receiving IP information of a receiving terminal from the mobile communication network, and using the stored IP information and IP information of the receiving terminal Control unit for transmitting the data packet Including, The control unit And determining whether the data packet is successfully transmitted to the receiving terminal and retransmitting the data packet to the receiving terminal when the transmission fails. The method of claim 4, wherein The control unit Counting the number of transmission failures of the data packet, determining whether the calculated number of transmission failures exceeds a preset reference number, and when the transmission failure number is less than or equal to the reference number, transmitting data of the terminal retransmitting the data packet to the receiving terminal controller. A controller for requesting PDP activation from a mobile communication network, storing PDP information according to a received PDP approval request, and requesting and receiving PDP information of a receiving terminal from the mobile communication network; A multimedia message generating unit generating a multimedia message according to an input signal; And HTTP message unit for generating an HTTP message using at least one of the multimedia message, the stored PDP information and the PDP information of the receiving terminal Including, The control unit And determining whether the HTTP message is successfully transmitted to the receiving terminal and retransmitting the HTTP message to the receiving terminal when the transmission fails. Receives an IP assignment request from the terminal, allocates an IP corresponding to the terminal, transmits the allocated IP information to the terminal, receives the IP information of the first terminal, and requests the IP information of the first terminal. A mobile communication network transmitting to the terminal; And Receives and stores IP information allocated by the mobile communication network, generates a data packet according to a user's input signal, requests and receives IP information of a second terminal from the mobile communication network, and stores the stored IP information and the second. A terminal that transmits the data packet to the second terminal using IP information of the terminal and determines whether the data packet is successfully transmitted to the second terminal and retransmits the data packet to the second terminal if the transmission fails. Data transmission control system of the terminal comprising a.

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